/Engine/Source/Runtime/LevelSequence/Public/LevelSequenceBindingReference.h
Bindings consist of an optional package name, and the path to the object within that package. Where package name is empty, the reference is a relative path from a specific outer (the context). Currently, the package name should only ever be empty for component references, which must remain relative bindings to work correctly with spawnables and reinstanced actors.
struct FLevelSequenceBindingReference